Improvement in heating-stoves



UNITED STATES SHUBAEL E. EEwEs, or ALBANY`,'NEW YORK. i

IMPROVEMENT IN HEATING-Moves'.

Specification forming part of Letters Patent No. 115,957, dated June 13, 1871.

I, SHUBAEL E. HEwEs, of the city and county of Albany, in the State of New York,` have invented a new and useful Heating, Cook ing, and Drying Apparatus, of vwhich the fol-V lowing is a specification: i

Nature cmd Objects of the Invention.

i form, in connection therewith, a continuous Vbottom for burning wood, or may beeelevated to a further extent for the purpose of stirring or shaking a coal-nre. The inventionvfurther relates to a device-for allowing the ingressor egress of air from the lower part of va heated lair-chamber surrounding the furnace, and to a novel construction and arrangement of cooking, heating, or drying trays', airlconductors, and flues. The linvention furtherrelates to a provision for permitting vthe escape of heated air from the upper part .of the heated airchamber. They invention further relates to the construction and arrangement of plates constituting the ends of the furnace and airheating chamber, in connection with a jacket or casing constituting the sides ofthe chamber. 4The invention further relates to a shield placed within a heating-drum for the double purpose j of protecting the sheet-ironV of the said drum and imparting heat to air, which is admitted therein for the purpose of consuming the inflammable gases. The invention further relates to a device for admitting cold air within the drum to regulate the draft.

Description of the Accompaayz'ngDmwng.

Figure 1 is a transverse section. of the apparatus on the line x, Fig. 2.`"Fig. 2 isa longitudinal section of the same at yy, Fig. l. Fig. 3 is a perspective view of one ofthe trays hereinafter described. Fig. 4` is a perspective view of a coupliugbar employed to connect the crown-piece with the sides of the furnace.

General Description.'

The furnace is constructed with sides A A, connected by means of grooved coupling-bars B B to the crown-piece C. This mode of con.-k

structing and connecting the parts enables me to cast the crown C in one piece, and to cast both the sides A A in one pattern. The particular form of the coupling-bars to adapt them to secure the parts together with joints sufficiently air-tight is clearly represented in Fig. 4. The bars of the grateD maybe made of any suitable construction. E E is a series of arms mounted upon a shaft, F, which may be formed at one end with a square, f, to adapt it to bc turned by means of a suitable key. The arms E E, being turned up into a horizontal position, fit between the grate-bars, so as to constitute` a solid bed when wood is to be used as fuel. By turning the arms up still further they may be employed to shake and stir a fire of anthracite or bituminous coal, and will efectually break the crust or aggregated masses which form in burning coal of the latter variety. Gr represents thev ash-pit, and H the base of the furnace, which is formed with perforations h for the admission of air to be heated. The ue I conducts the gaseous products of combustion from the furnace to the drum J, from whence they are discharged through the ue K'. L represents a shield placed Vwithin the drum above the.

vflue I, and employed to protect the sheet-iron of the drum from excessive heat, and also to heat theair'which is admitted through a number of apertures between the said shield and the inner shell of the drum in order to effect the complete combustion of any inflammable gases which may enter the drum in an unconsumed state. rlhe furnace is thus adapted to completely burn its own smoke. Mrepresents a jacket vof sheet-iron completely enveloping the furnace and drum, so as to form a space, m, for the heating of air, which enters through the aperture h. The end plates A1 and A2 of the furnace are made continuous from the base H to the top of the drum, and are cast with suitable flanges to receive the casing M, the drum J, and the plates A A and B of the fur-` nace. a2 may represent the furnace-door, through which fuel is introduced, and which is also provided with a suitable register, a3, for the admission of air when burning wood. j is a rregister' inthe drum'J, through which air may be admitted in order-to regulate the' y draft.- N is a door in the upper part of the casing M, by opening which air may be allowed to escape for heating purposes. A similar door may be supplied on each side, if desired. O is a door in the lower part, which, when placed in the position shown in Fig. 1, causes the current of heated air to be deliv ered into the conductor P to be carried to my drying or cooking apparatus.. A similar door may be formed on the other side of the casing, if desired, in order to admit air above the base II instead of taking it up from beneath, as in the present illustration. The air-conductor P may preferably be constructed of paper protected by a coating of soluble glass, which serves also to render it a more perfect noneonductor of heat. If preferred, the said conductor may be made of wood coated in a sim ilar manner, or of sheet metal protected on the outside with felt or anyother non-conducting material. The flue p, which rises from the back of the conductor P, delivers the heated air into the lower part of a series of trays of peculiar construction. The sides Q, of these trays are formed of Wood, and they are provided with screen or slat bottoms It, and each with a flue, S, at one end. It will be observed from the representations given in Figs. l and 3 that the screen bottoms l B. are elevated sufficiently above the lower edges ofthe sides (n) to leave a space,r, for the passage of air beneath the slats, and the trays are arranged with the ilues S alternately at opposite ends. The sides Q of the. trays thus .form a continuous Wall from the bottom to the .top of the series, and the hot air is caused to pass from end to end of the trays in the serpentine course indicated by the arrows. When 1e trays are empty a considerable part of the heated air would pass through between the slats. In order to prevent this, when the apparatus is used for drying clothes for laundry purposes I spread the clothes, neatly folded, over the slat bottoms as high as the top of each tray, leaving the space beneath the slats for the passage of air. The clothes are thus made to complete the tight serpentine flue formed by the series of trays.\

If the apparatus is to be used for baking or other cooking purposes I cover the slat bottoms either with the pans in which the material to be cooked is placed, or with sheet-metal plates, or preferably with asbestus paper or cloth, as shown at V in Fig. 1, in order to form a suflicient-ly perfect non-conductor of heat.

It will thus be seen that in all the various uses of the apparatus the provision for a serpentine iiue or passage for the heated air is maintained.

T represents the air-discharge pipe. The

tray with soluble glass as a protection to the Wood from the heat and preventive of conduction and radiation.

By this mode of making or coating the conductor P p, and the top, bottom, and sides of the cooking or drying chamber of a non-conducting material, I am enabled to utilize prac tically the whole amount of heat produced by the furnace Withscarcely any loss.

My flue system, as constituted of the slat or screen bottom trays Q R S, differs essentially from a drying-house provided with perforated or slat shelves, through which the airis caused to pass. The sides Q of the trays constitute the Walls ofthe flue or chamber, and the artt cles placed upon the slat bottoms R, While they are exposed to hot air above and below, themselves serve to complete the continuous serpentine ilue by cutting off all communication excepting through the passages S.

IIhe large capacity of the drum .I permits the gases from the furnace to expand Within it, and to be completely consumed by contact with atmospheric air delivered in a heated state over the end of the shield L. The drum thus constitutes a combustion-chamber for the gases, the force of draft, and consequently the heat produced, being controiled by the air-register or dampcrj. the best possible advantage.

Claims..

I claim as my invention-- 1. The coupling-bars Id, employed to connect the sides A and crown C of the furnace, substantially as herein described.

2. rIlhe pivoted arms E, when constructed and arranged, as herein represented and de scribed, to forma close or continuous bottom in connection with the bars of the grate D, or to pass up between the said bars for the purpose of stirring or shaking the burning fuel.

3. The combination of the furnace A, door or damper O, conductor Pp, hot-air flue formed of the trays Q R S, and discharge-dues T K, substantially as and for the purposes set forth.

4. The air-discharge door or register N, one or more, in combination with the furnace A and casin g M, substantially as described.

5. The continuous end plates A1 Az extending from the base H to the top of the drum, cast with ilan ges for the reception ofthe drum J, casing M, and the plates A B of the furnace, substantially as described.

6. The shield L for protecting the sheet-iron drum and heating air admitted within the latter to effect the combustion of the gases.

7. The register j, in combination with the drum J and furnace A, substantially as dcscribed.

S. E. HEWES.

Witnesses:

WALTER ALLEN, WM. H. BRERETON.

rIlhe fuel is thus burned to 

